Servomex 07931001B, Operator'S Manual

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07931001B revision 6 © Servomex Group Limited. 2020
3
K1: Relay from Analyzer Main Board Sealed Device
K1: Relay from Option Board Sealed Device
K2: Relay from Option Board Sealed Device
EXPLOSION HAZARD - Substitution of components may
impair suitability for CL I, Div 2. (North America only).
Make sure that the operating environment is within the limits
specified in the product data (section 2.6.5).
Do not install the Laser 3 Plus in a high-velocity dust-laden
atmosphere.
Do not open the enclosure if an explosive atmosphere is
present.
Do not open the enclosure if the Laser 3 Plus is energized.
It is a condition of certification that the unit must be installed
following the appropriate national or international legislation
or codes of practice. In particular, you must make sure that
the correct glands are fitted to cable entries and that you do
not compromise the weatherproofing of the enclosure.
All of the analyzer electrical connections are considered to be
incendive and therefore must only be connected to safe area
equipment.
The equipment is incapable of passing the dielectric strength
test prescribed by the standards, and so this must be taken
into account during installation by using an SELV power
source with a prospective short circuit current not exceeding
40A.
Hazardous area variants
Do not use hazardous area variants with a process
atmosphere that requires EPL Ga. (e.g. Zone 0). If they are
used within this process atmosphere, the hazardous area
certification may be invalidated.
Do not use hazardous area variants for oxygen enriched
flammable samples; that is gases over 21% O
2
. If they are
used with gases containing over 21% O
2
the hazardous area
certification may be invalidated.
Hazardous area variants are certified for use with a flammable
process atmosphere at a pressure of 0.8 to 1.1 bar absolute
(11.6 to 15.95 psi). If used with a flammable process
atmosphere beyond these limits, the hazardous area
certification may be invalidated.